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POST UTME IGBINEDION UNIVERSITY 2022 Physics | Objective

Are you preparing for POST UTME IGBINEDION UNIVERSITY exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2022 Physics (Objective) questions designed to simulate the real exam environment.

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Question 1

A particle of mass 2 kg is moving in a circular path of radius 3 m with a cons\tant speed of 4 m/s. If the particle is subjected to a centripetal force of 12 N, what is the magnitude of the force?

A. 8 N

Correct B. 12 N

C. 16 N

D. 20 N

Correct Answer: B

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Question 2

A 100 W light bulb is connected to a 220 V power source. If the resis\tance of the bulb is 10 Ω, what is the current flowing through it?

A. 2 A

Correct B. 4 A

C. 6 A

D. 8 A

Correct Answer: B

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Question 3

A body of mass 5 kg is moving with a velocity of 10 m/s. If it is subjected to a force of 20 N, what is the acceleration produced?

A. 2 m/s^2

Correct B. 4 m/s^2

C. 6 m/s^2

D. 8 m/s^2

Correct Answer: B

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Question 4

A spring of force cons\tant 100 N/m is stretched by 2 m. What is the potential energy stored in the spring?

A. 200 J

Correct B. 400 J

C. 600 J

D. 800 J

Correct Answer: B

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Question 5

A particle of mass 3 kg is moving in a circular path of radius 4 m with a cons\tant speed of 6 m/s. If the particle is subjected to a centripetal force of 24 N, what is the magnitude of the force?

A. 12 N

Correct B. 24 N

C. 36 N

D. 48 N

Correct Answer: B

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Question 6

A particle of mass 2 kg is moving in a circular path of radius 3 m with a cons\tant speed of 4 m/s. If the particle is displaced by 1 m from its equilibrium position, determine the magnitude of the force required to maintain the particle in its new position.

A. 12 N

B. 16 N

Correct C. 20 N

D. 24 N

Correct Answer: C

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Question 7

A 10 Ω resistor is connected in series with a 20 Ω resistor and a 30 Ω resistor. If a 12 V battery is connected across the circuit, determine the current flowing through the 20 Ω resistor.

A. 0.2 A

B. 0.4 A

Correct C. 0.6 A

D. 0.8 A

Correct Answer: C

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Question 8

A 5 kg block is moving with a velocity of 2 m/s on a frictionless surface. If a force of 10 N is applied to the block, determine the acceleration of the block.

A. 0.5 m/s^2

B. 1 m/s^2

Correct C. 2 m/s^2

D. 5 m/s^2

Correct Answer: C

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Question 9

A 2 kg object is attached to a horizontal, massless spring with a force cons\tant of 100 N/m. If the object is displaced by 0.5 m from its equilibrium position, determine the magnitude of the force exerted by the spring on the object.

A. 50 N

B. 75 N

Correct C. 100 N

D. 125 N

Correct Answer: C

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Question 10

A 10 Ω resistor is connected in parallel with a 20 Ω resistor. If a 12 V battery is connected across the circuit, determine the current flowing through the 10 Ω resistor.

A. 0.6 A

B. 0.8 A

Correct C. 1 A

D. 1.2 A

Correct Answer: C

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Question 11

A particle of mass $m$ is moving in a circular orbit of radius $r$ under the influence of a central force given by $F(r) = k/r^2$, where $k$ is a cons\tant. If the particle's speed is $v$, what is the magnitude of the force acting on the particle?

A. mv^2/r

B. mv^2/r^2

C. k/r

Correct D. k/r^2

Correct Answer: D

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Question 12

A sound wave with frequency $f$ is traveling through a medium with speed $v$. If the wavelength of the sound wave is $\lambda$, what is the period of the sound wave?

A. f\lambda/v

B. v/\lambda

Correct C. \lambda/v

D. f/v

Correct Answer: C

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Question 13

A capacitor consists of two parallel plates of area $A$ and separation $d$. If the capaci\tance of the capacitor is $C$, what is the charge on the plates?

Correct A. CV

B. A/d

C. Cd

D. Ad

Correct Answer: A

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Question 14

A particle of mass $m$ is moving in a straight line with initial velocity $v_0$ and initial position $x_0$. If the particle experiences a cons\tant acceleration $a$, what is the particle's velocity after time $t$?

Correct A. v_0 + at

B. v_0 - at

C. x_0 + v_0t

D. x_0 - v_0t

Correct Answer: A

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Question 15

A sound wave with frequency $f$ is traveling through a medium with speed $v$. If the wavelength of the sound wave is $\lambda$, what is the frequency of the sound wave?

Correct A. v/\lambda

B. \lambda/v

C. f\lambda/v

D. v\lambda/f

Correct Answer: A

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Question 16

A parallel plate capacitor has a capaci\tance of 10 μF and is connected to a 12 V battery. If the dis\tance between the plates is doubled, what is the new capaci\tance?

Correct A. 20 μF

B. 10 μF

C. 5 μF

D. 2.5 μF

Correct Answer: A

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Question 17

A ray of light passes from air into a glass slab of re\fractive index 1.5. If the angle of incidence is 30°, what is the angle of re\fraction?

Correct A. 20°

B. 30°

C. 40°

D. 50°

Correct Answer: A

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Question 18

A coil of wire has a resis\tance of 10 Ω and an induc\tance of 0.1 H. If a current of 2 A flows through it, what is the induced emf?

A. 0.2 V

Correct B. 0.4 V

C. 0.6 V

D. 0.8 V

Correct Answer: B

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Question 19

A sound wave has a frequency of 200 Hz and a wavelength of 0.5 m. What is the speed of the wave?

A. 100 m/s

Correct B. 200 m/s

C. 300 m/s

D. 400 m/s

Correct Answer: B

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Question 20

A charged particle of mass 1 kg and charge 2 C is moving in a magnetic field of strength 0.5 T. If the particle has a velocity of 2 m/s, what is the force acting on it?

A. 0.1 N

Correct B. 0.2 N

C. 0.3 N

D. 0.4 N

Correct Answer: B

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Question 21

A uniform solid sphere of mass 2 kg and radius 0.1 m is placed at the bottom of a deep well. If the sphere is given an initial velocity of 5 m/s upwards, calculate the time it takes for the sphere to reach its maximum height.

A. 1.5 s

B. 2 s

Correct C. 2.5 s

D. 3 s

Correct Answer: C

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Question 22

A coil of wire with 100 turns and a radius of 0.05 m is placed in a magnetic field of strength 0.5 T. If the current flowing through the coil is 2 A, calculate the magnitude of the torque experienced by the coil.

A. 0.1 Nm

B. 0.2 Nm

Correct C. 0.3 Nm

D. 0.4 Nm

Correct Answer: C

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Question 23

A gas is heated from 300 K to 400 K at cons\tant volume. If the initial pressure is 1 atm, calculate the final pressure.

A. 1.33 atm

B. 1.5 atm

Correct C. 1.67 atm

D. 2 atm

Correct Answer: C

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Question 24

A vector A has a magnitude of 3 units and makes an angle of 60° with the positive x-axis. If vector B has a magnitude of 4 units and makes an angle of 30° with the positive x-axis, calculate the magnitude of the resul\tant vector A + B.

A. 4.5 units

B. 5 units

Correct C. 5.5 units

D. 6 units

Correct Answer: C

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Question 25

A circuit consists of a 12 V battery, a 4 Ω resistor, and a 6 Ω resistor connected in series. If the current flowing through the circuit is 1 A, calculate the voltage drop across the 6 Ω resistor.

A. 2 V

B. 3 V

Correct C. 4 V

D. 6 V

Correct Answer: C

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